JBL SCS135SI Speaker Package (1 Viewer)

[ClaytonMG]

Alright, as maybe some of you know, I have been having a few problems with speakers in the past couple weeks. Today I exchanged my Yamaha 5.1 speaker package for the JBL SCS135SI seen here: http://www.bestbuy.com/detail.asp?e=...cat=15&scat=23
As I started testing my speakers out, it sounded awesome! But then I tried the dts trailer where the CD comes from behind and explodes and all that cool stuff. And I heard this rattling. It sounds like something is inside where the sub pushes air out in the front! It's very annoying! What can I do to fix it? I have stuck anything down there cuz I am smarter than that and nothing has gone in there because it's brand new! Any thoughts? Does it just sound that way? Please help!
Clayton

 

[ClaytonMG]

You can see it on JBL's site too:
http://www.jbl.com/home/products/pro...SCS&sCatId=HCS
Clayton
By the way, I have a Pioneer 100 watts per channel reciever if that helps though I doubt it will.